| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
A Porous Crystal Plasticity Finite Element Model for Void Evolution in Aluminum Alloys under Multiaxial Loading |
| Author(s) |
S K Gargeya Bhamidipati, Somnath Ghosh |
| On-Site Speaker (Planned) |
S K Gargeya Bhamidipati |
| Abstract Scope |
Aluminum alloys are characterized by a polycrystalline microstructure containing precipitates, which makes them suitable for high specific strength applications. In such alloys containing precipitates, ductile failure occurs by void nucleation, growth and eventual coalescence into cracks. Constitutive models for predicting the behavior of porous crystals must consider stress triaxiality effects on plastic deformation and void evolution. In this work, we calibrate the porous Crystal Plasticity Finite Element Model developed using variational homogenization principles from Representative Volume Element (RVE) based Crystal Plasticity Finite Element simulations containing porosity, by maintaining a specific homogenized stress state. The RVE studies showed that the initial porosity and stress triaxiality have significant effects on the plastic deformation behavior and void evolution. The model is further enhanced in terms of its ability to capture the nucleation of voids, which is important in the context of modeling spall failure in crystals containing negligible initial porosity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Modeling and Simulation, Other |